This repository has been archived on 2026-02-24. You can view files and clone it. You cannot open issues or pull requests or push a commit.
Files
shared/services/federation_publish.py
giles 9a8b556c13 Fix duplicate AP posts + stable object IDs
- Stable object ID per source (Post#123 always gets the same id)
  instead of deriving from activity UUID
- Dedup Update activities (Ghost fires duplicate webhooks)
- Use setdefault for object id in delivery handler

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-22 10:14:40 +00:00

83 lines
2.8 KiB
Python

"""Inline federation publication — called at write time, not via async handler.
Replaces the old pattern where emit_event("post.published") → async handler →
publish_activity(). Now the originating service calls try_publish() directly,
which creates the APActivity in the same DB transaction. AP delivery
(federation.activity_created → inbox POST) stays async.
"""
from __future__ import annotations
import logging
import os
from sqlalchemy.ext.asyncio import AsyncSession
from shared.services.registry import services
log = logging.getLogger(__name__)
async def try_publish(
session: AsyncSession,
*,
user_id: int | None,
activity_type: str,
object_type: str,
object_data: dict,
source_type: str,
source_id: int,
) -> None:
"""Publish an AP activity if federation is available and user has a profile.
Safe to call from any app — returns silently if federation isn't wired
or the user has no actor profile.
"""
if not services.has("federation"):
return
if not user_id:
return
actor = await services.federation.get_actor_by_user_id(session, user_id)
if not actor:
return
# Dedup: don't re-Create if already published, don't re-Delete if already deleted
existing = await services.federation.get_activity_for_source(
session, source_type, source_id,
)
if existing:
if activity_type == "Create" and existing.activity_type != "Delete":
return # already published (allow re-Create after Delete/unpublish)
if activity_type == "Update" and existing.activity_type == "Update":
return # already updated (Ghost fires duplicate webhooks)
if activity_type == "Delete" and existing.activity_type == "Delete":
return # already deleted
elif activity_type in ("Delete", "Update"):
return # never published, nothing to delete/update
# Stable object ID: same source always gets the same object id so
# Mastodon treats Create/Update/Delete as the same post.
domain = os.getenv("AP_DOMAIN", "rose-ash.com")
object_data["id"] = (
f"https://{domain}/users/{actor.preferred_username}"
f"/objects/{source_type.lower()}/{source_id}"
)
try:
await services.federation.publish_activity(
session,
actor_user_id=user_id,
activity_type=activity_type,
object_type=object_type,
object_data=object_data,
source_type=source_type,
source_id=source_id,
)
log.info(
"Published %s/%s for %s#%d by user %d",
activity_type, object_type, source_type, source_id, user_id,
)
except Exception:
log.exception("Failed to publish activity for %s#%d", source_type, source_id)